1
JEE Main 2022 (Online) 29th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following is the correct plot for the probability density $${\psi ^2}$$ (r) as a function of distance 'r' of the electron from the nucleus for 2s orbital?

A
JEE Main 2022 (Online) 29th June Evening Shift Chemistry - Structure of Atom Question 78 English Option 1
B
JEE Main 2022 (Online) 29th June Evening Shift Chemistry - Structure of Atom Question 78 English Option 2
C
JEE Main 2022 (Online) 29th June Evening Shift Chemistry - Structure of Atom Question 78 English Option 3
D
JEE Main 2022 (Online) 29th June Evening Shift Chemistry - Structure of Atom Question 78 English Option 4
2
JEE Main 2022 (Online) 29th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following statements are correct?

(A) The electronic configuration of Cr is [Ar] 3d5 4s1.

(B) The magnetic quantum number may have a negative value.

(C) In the ground state of an atom, the orbitals are filled in order of their increasing energies.

(D) The total number of nodes are given by n $$-$$ 2.

Choose the most appropriate answer from the options given below :

A
(A), (C) and (D) only
B
(A) and (B) only
C
(A) and (C) only
D
(A), (B) and (C) only
3
JEE Main 2022 (Online) 28th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Consider the following statements :

(A) The principal quantum number 'n' is a positive integer with values of 'n' = 1, 2, 3, ...

(B) The azimuthal quantum number 'l' for a given 'n' (principal quantum number) can have values as 'l' = 0, 1, 2, ...... n

(C) Magnetic orbital quantum number 'ml' for a particular 'l' (azimuthal quantum number) has (2l + 1) values.

(D) $$\pm$$ 1/2 are the two possible orientations of electron spin.

(E) For l = 5, there will be a total of 9 orbital

Which of the above statements are correct?

A
(A), (B) and (C)
B
(A), (C), (D) and (E)
C
(A), (C) and (D)
D
(A), (B), (C) and (D)
4
JEE Main 2022 (Online) 26th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The number of radial and angular nodes in 4d orbital are, respectively

A
1 and 2
B
3 and 2
C
1 and 0
D
2 and 1
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